Pipe union



Dec. 24, 1929. R, G, STALLARD 1,740,910

PIPE lUNION Filed April 8. 192e vmenkoz Dec. 2d, 1929 TATES enter FFCEPEE NEON Application lled .April 8,

`This invention relates to improvements in threadless pipe unions andhas as its general object to provide a union by the use of which, inconnection with a ni ple, or bushing, a firm connection may be ma ebetween the sections of a pipe or the adjacent ends of two pipes capableof withstanding high pressure without any likelihood oi leakage.

Another object of the invention is to 'provide a pipe union which may bereadily fitted to the pipes to be connected without the necessity of inany way acting upon the pipe ends to adapt the union to betittedthereto.

Another object of the invention is to provide a pipe union embodying acompressible gasket and means for compressing and distorting the gasketto cause the same to bind about the pipe ends in a water-tight manner atthe time the union is applied, the said gas- 29 kot being of metal asdistinguished from the gasket usually employed in such unions.

In the accompanyinA drawings: Figure 1 is a verticallongitudinalsectional view through the union embodying the invention, the partscomprising the same being shown assembled but not adjusted to the eX-tent to seal the union.

Figure 2 is a similar view illustrating the parts so adjusted and theunion sealed.

Figure 3 is a group perspective view illustrating the gasket and thecompression ring associated therewith.

ln the drawings, the numeral 1 indicates one pipe end which is to becoupled with another pipe end, (not shown), and the numeral 2 indicatesthe union embodying the invention, the said union comprising a sleevehaving a bore 3 which is cylindrical and smooth and of a diameter tosnugly receive the pipe 1. The sleeve comprising the union is exteriorlyflared in the direction of one end, as indicated by the numeral 4, andat this end the bore 3 is enlarged to cylindrical form as indicated bythe numeral 5, thus providing a shoulder which is indicated by thenumeral 6, the shoulder extending circumferentially within the borebetween the portion of the length of the bore which accommodates thepipe 1 and the enlargement of the bore, and l0 the said shoulder beingiiat. The wall of the 1226. Serial No. 100,632.

bore at the enlarged portion 5 is smooth and `ing in every respect tothe union '2.

The numeral 11 indicates a gasket which is of annular form and has acylindrical opening 12, and this gasket is of lead or other relativelysot metal and is preferablyv provided with a cylindrical peripheralportion 13 and a beveled or conical peripheral portion 14, the surface14 meeting the wall of the opening 12 at one face of the gasket. Theopening 12 is of a diameter to adapt the gasket to be readily fittedover the end portion of the pipe 1, and the other face 15 of the gasketis flat so as to be disposable against the shoulder 6. As shown inFigure 1 ofthe drawings, the union 2 is tted onto the pipe end and thegasket 11 is, in turn, fitted onto the pipe end and within the portion 5of the bore of the union, the fiat face 15 of said gasket restingagainst the iat face of the shoulder 6 and the peripheral portion 13 ofthe gasket engaging the wall of the enlarged portion 5 of the said here.

rihe numeral 16 indicates acompression ring which has a Hat face 17 andthe opening of the ring, indicated by the numeral 18, is cylindrical fora portion of its length and of a diameter to relatively snugly fit thepipe 1, and the opening for the remainder of its length is conical orared, as indicated by the numeral 19, to correspond to the contour ofthe surface 14 of the gasket 11, the other face 2O of the ring being ofannular form and relatively narrow and surrounding the liared end of theopening 18. Exteriorly, the ring 16 is cylindrical and of a diameter tolit within the cylindrical enlarged portion 5 of the bore 3 of theunion, and the cylindrical portion of the opening of the ring is of adiameter to snugly it the pipe 1, and in assembling the parts the ringis tted to the end of the pipe 1 after the gasket 11 has been arrangedin the 100 position shown in Figure 1, and with the distort theinitially beveled face and said flared portion 19 of the opening of thering outer penphery of said gasket and effect bindsnugly contacting thebeveled or conical` surmg o the gasket against the shoulder and face 14of the gasket. wall of the bore and about the pipe end.

s It will be understood, of course, that ordi-` In testlmon whereof Iaiiix my signature. 7o

narily two of the unions will be employed and ROSVVE L Gr. STALLARD.[1.. 5,]

y the threaded ends of the ni ple 9 will be fitted into the Aenlargedthreade ends of the bores of the unions and when the parts have been v10 assembled as shown in Figure 1 of the drawl f 75 ings, the unions arerotated'through the medium of a wrench, thus causing the ends of thenipple 9 to exert an endwise thrust against the compression rings 16 andeffect distortion of the gaskets 11 to cause the gaskets to exo pandinwardly against the respective pipe ends 1, this compression of thegaskets about the pipe ends being effected through the coaction o theconical Walls 19 of the compres- 20 sion rings 16 with the conicalsurfaces 14 of g5 therespective gaskets. In this manner, anexceptionally snug and Huid-tightcompression of the gaskets about thepipe ends is obtained and the connection is such as to'be a permanentone until the unions are purposely so,

` reversely rotated to unthread them from the nipple 9.

It will be evident that theunion embodying the invention may beconveniently employe Y v where repairs are to be made, as for example,

where one of two pipe ends isfbroken near the coupling and where thethreaded end of the other pipe is left intact, for in such a case, a

bushing may be threaded onto the end of the v 35. last mentioned pipeand the union embodying .10.0

the invention applied to the broken end of the first mentioned pipe andthe said union then threaded onto the end of thebushing,

thereby eiecting coupling of the pipe ends 4o by the employment of asingle one of the bush- 105 ings embodyingthe invention.

Having thus described the invention, what I claim is: v

A pipe unionr of the class described com-y prising a body having a boreto accommodate 110 a pipe end to be coupled, the bore having an enlargedportion providin a shoulder, a soft metal gasket having a at facedisposed against the. shoulder and having its opposite face beveled,saidgasket having its outer pe- 115 riphery initially engaged with thewall of the enlarged portion, a compression ring disposed within saidenlarged portion of the bore and having its opening formed reverselywith a flat face and a flared'ace, the latter face providing a beveledsurface for coaction with the beveled face of the gasket, said enlargedportion of the bore being threaded, and a couw pling nipple having itsthreaded end tted 125 into the said enlarged threaded end of the boreand having a Hat terminal annulus bearing against said compression ringand when the body and nipple are threaded together, ef-

fecting movement of the ring to compress and 13- i

